diff options
Diffstat (limited to 'roms/u-boot/board/phytec/pcm058/pcm058.c')
| -rw-r--r-- | roms/u-boot/board/phytec/pcm058/pcm058.c | 287 |
1 files changed, 287 insertions, 0 deletions
diff --git a/roms/u-boot/board/phytec/pcm058/pcm058.c b/roms/u-boot/board/phytec/pcm058/pcm058.c new file mode 100644 index 000000000..5e5b129ef --- /dev/null +++ b/roms/u-boot/board/phytec/pcm058/pcm058.c @@ -0,0 +1,287 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (C) 2016 Stefano Babic <sbabic@denx.de> + */ + +/* + * Please note: there are two version of the board + * one with NAND and the other with eMMC. + * Both NAND and eMMC cannot be set because they share the + * same pins (SD4) + */ +#include <common.h> +#include <init.h> +#include <net.h> +#include <asm/arch/crm_regs.h> +#include <asm/arch/mx6-ddr.h> +#include <asm/global_data.h> +#include <asm/mach-imx/boot_mode.h> +#include <asm/arch/sys_proto.h> +#include <dm.h> + +DECLARE_GLOBAL_DATA_PTR; + +#define IMX6Q_DRIVE_STRENGTH 0x30 + +int dram_init(void) +{ + gd->ram_size = imx_ddr_size(); + return 0; +} + +int board_mmc_get_env_dev(int devno) +{ + return devno - 1; +} + +#ifdef CONFIG_CMD_NAND +static void setup_gpmi_nand(void) +{ + struct mxc_ccm_reg *mxc_ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR; + + /* gate ENFC_CLK_ROOT clock first,before clk source switch */ + clrbits_le32(&mxc_ccm->CCGR2, MXC_CCM_CCGR2_IOMUX_IPT_CLK_IO_MASK); + + /* config gpmi and bch clock to 100 MHz */ + clrsetbits_le32(&mxc_ccm->cs2cdr, + MXC_CCM_CS2CDR_ENFC_CLK_PODF_MASK | + MXC_CCM_CS2CDR_ENFC_CLK_PRED_MASK | + MXC_CCM_CS2CDR_ENFC_CLK_SEL_MASK, + MXC_CCM_CS2CDR_ENFC_CLK_PODF(0) | + MXC_CCM_CS2CDR_ENFC_CLK_PRED(3) | + MXC_CCM_CS2CDR_ENFC_CLK_SEL(3)); + + /* enable ENFC_CLK_ROOT clock */ + setbits_le32(&mxc_ccm->CCGR2, MXC_CCM_CCGR2_IOMUX_IPT_CLK_IO_MASK); + + /* enable gpmi and bch clock gating */ + setbits_le32(&mxc_ccm->CCGR4, + MXC_CCM_CCGR4_RAWNAND_U_BCH_INPUT_APB_MASK | + MXC_CCM_CCGR4_RAWNAND_U_GPMI_BCH_INPUT_BCH_MASK | + MXC_CCM_CCGR4_RAWNAND_U_GPMI_BCH_INPUT_GPMI_IO_MASK | + MXC_CCM_CCGR4_RAWNAND_U_GPMI_INPUT_APB_MASK | + MXC_CCM_CCGR4_PL301_MX6QPER1_BCH_OFFSET); + + /* enable apbh clock gating */ + setbits_le32(&mxc_ccm->CCGR0, MXC_CCM_CCGR0_APBHDMA_MASK); +} +#endif + +int board_init(void) +{ + /* address of boot parameters */ + gd->bd->bi_boot_params = PHYS_SDRAM + 0x100; + +#ifdef CONFIG_CMD_NAND + setup_gpmi_nand(); +#endif + return 0; +} + +#ifdef CONFIG_CMD_BMODE +/* + * BOOT_CFG1, BOOT_CFG2, BOOT_CFG3, BOOT_CFG4 + * see Table 8-11 and Table 5-9 + * BOOT_CFG1[7] = 1 (boot from NAND) + * BOOT_CFG1[5] = 0 - raw NAND + * BOOT_CFG1[4] = 0 - default pad settings + * BOOT_CFG1[3:2] = 00 - devices = 1 + * BOOT_CFG1[1:0] = 00 - Row Address Cycles = 3 + * BOOT_CFG2[4:3] = 00 - Boot Search Count = 2 + * BOOT_CFG2[2:1] = 01 - Pages In Block = 64 + * BOOT_CFG2[0] = 0 - Reset time 12ms + */ +static const struct boot_mode board_boot_modes[] = { + /* NAND: 64pages per block, 3 row addr cycles, 2 copies of FCB/DBBT */ + {"nand", MAKE_CFGVAL(0x80, 0x02, 0x00, 0x00)}, + {"mmc0", MAKE_CFGVAL(0x40, 0x20, 0x00, 0x00)}, + {NULL, 0}, +}; +#endif + +int board_late_init(void) +{ +#ifdef CONFIG_CMD_BMODE + add_board_boot_modes(board_boot_modes); +#endif + + return 0; +} + +#ifdef CONFIG_SPL_BUILD +#include <spl.h> +#include <linux/libfdt.h> + +static const struct mx6dq_iomux_ddr_regs mx6_ddr_ioregs = { + .dram_sdclk_0 = 0x00000030, + .dram_sdclk_1 = 0x00000030, + .dram_cas = 0x00000030, + .dram_ras = 0x00000030, + .dram_reset = 0x00000030, + .dram_sdcke0 = 0x00000030, + .dram_sdcke1 = 0x00000030, + .dram_sdba2 = 0x00000000, + .dram_sdodt0 = 0x00000030, + .dram_sdodt1 = 0x00000030, + .dram_sdqs0 = 0x00000030, + .dram_sdqs1 = 0x00000030, + .dram_sdqs2 = 0x00000030, + .dram_sdqs3 = 0x00000030, + .dram_sdqs4 = 0x00000030, + .dram_sdqs5 = 0x00000030, + .dram_sdqs6 = 0x00000030, + .dram_sdqs7 = 0x00000030, + .dram_dqm0 = 0x00000030, + .dram_dqm1 = 0x00000030, + .dram_dqm2 = 0x00000030, + .dram_dqm3 = 0x00000030, + .dram_dqm4 = 0x00000030, + .dram_dqm5 = 0x00000030, + .dram_dqm6 = 0x00000030, + .dram_dqm7 = 0x00000030, +}; + +static const struct mx6dq_iomux_grp_regs mx6_grp_ioregs = { + .grp_ddr_type = 0x000C0000, + .grp_ddrmode_ctl = 0x00020000, + .grp_ddrpke = 0x00000000, + .grp_addds = IMX6Q_DRIVE_STRENGTH, + .grp_ctlds = IMX6Q_DRIVE_STRENGTH, + .grp_ddrmode = 0x00020000, + .grp_b0ds = IMX6Q_DRIVE_STRENGTH, + .grp_b1ds = IMX6Q_DRIVE_STRENGTH, + .grp_b2ds = IMX6Q_DRIVE_STRENGTH, + .grp_b3ds = IMX6Q_DRIVE_STRENGTH, + .grp_b4ds = IMX6Q_DRIVE_STRENGTH, + .grp_b5ds = IMX6Q_DRIVE_STRENGTH, + .grp_b6ds = IMX6Q_DRIVE_STRENGTH, + .grp_b7ds = IMX6Q_DRIVE_STRENGTH, +}; + +static const struct mx6_mmdc_calibration mx6_mmcd_calib = { + .p0_mpwldectrl0 = 0x00140014, + .p0_mpwldectrl1 = 0x000A0015, + .p1_mpwldectrl0 = 0x000A001E, + .p1_mpwldectrl1 = 0x000A0015, + .p0_mpdgctrl0 = 0x43080314, + .p0_mpdgctrl1 = 0x02680300, + .p1_mpdgctrl0 = 0x430C0318, + .p1_mpdgctrl1 = 0x03000254, + .p0_mprddlctl = 0x3A323234, + .p1_mprddlctl = 0x3E3C3242, + .p0_mpwrdlctl = 0x2A2E3632, + .p1_mpwrdlctl = 0x3C323E34, +}; + +static struct mx6_ddr3_cfg mem_ddr = { + .mem_speed = 1600, + .density = 2, + .width = 16, + .banks = 8, + .rowaddr = 14, + .coladdr = 10, + .pagesz = 2, + .trcd = 1375, + .trcmin = 4875, + .trasmin = 3500, + .SRT = 1, +}; + +static void ccgr_init(void) +{ + struct mxc_ccm_reg *ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR; + + writel(0x00C03F3F, &ccm->CCGR0); + writel(0x0030FC03, &ccm->CCGR1); + writel(0x0FFFC000, &ccm->CCGR2); + writel(0x3FF00000, &ccm->CCGR3); + writel(0x00FFF300, &ccm->CCGR4); + writel(0x0F0000C3, &ccm->CCGR5); + writel(0x000003FF, &ccm->CCGR6); +} + +static void spl_dram_init(void) +{ + struct mx6_ddr_sysinfo sysinfo = { + /* width of data bus:0=16,1=32,2=64 */ + .dsize = 2, + /* config for full 4GB range so that get_mem_size() works */ + .cs_density = 32, /* 32Gb per CS */ + /* single chip select */ + .ncs = 1, + .cs1_mirror = 0, + .rtt_wr = 1 /*DDR3_RTT_60_OHM*/, /* RTT_Wr = RZQ/4 */ + .rtt_nom = 1 /*DDR3_RTT_60_OHM*/, /* RTT_Nom = RZQ/4 */ + .walat = 1, /* Write additional latency */ + .ralat = 5, /* Read additional latency */ + .mif3_mode = 3, /* Command prediction working mode */ + .bi_on = 1, /* Bank interleaving enabled */ + .sde_to_rst = 0x10, /* 14 cycles, 200us (JEDEC default) */ + .rst_to_cke = 0x23, /* 33 cycles, 500us (JEDEC default) */ + .ddr_type = DDR_TYPE_DDR3, + .refsel = 1, /* Refresh cycles at 32KHz */ + .refr = 7, /* 8 refresh commands per refresh cycle */ + }; + + mx6dq_dram_iocfg(64, &mx6_ddr_ioregs, &mx6_grp_ioregs); + mx6_dram_cfg(&sysinfo, &mx6_mmcd_calib, &mem_ddr); +} + +void board_boot_order(u32 *spl_boot_list) +{ + spl_boot_list[0] = spl_boot_device(); + printf("Boot device %x\n", spl_boot_list[0]); + switch (spl_boot_list[0]) { + case BOOT_DEVICE_SPI: + spl_boot_list[1] = BOOT_DEVICE_UART; + break; + case BOOT_DEVICE_MMC1: + spl_boot_list[1] = BOOT_DEVICE_SPI; + spl_boot_list[2] = BOOT_DEVICE_UART; + break; + default: + printf("Boot device %x\n", spl_boot_list[0]); + } +} + +void board_init_f(ulong dummy) +{ + /* setup clock gating */ + ccgr_init(); + + /* setup AIPS and disable watchdog */ + arch_cpu_init(); + + /* setup AXI */ + gpr_init(); + + /* setup GP timer */ + timer_init(); + + /* DDR initialization */ + spl_dram_init(); + + /* Clear the BSS. */ + memset(__bss_start, 0, __bss_end - __bss_start); + + /* Enable device tree and early DM support*/ + spl_early_init(); + + /* UART clocks enabled and gd valid - init serial console */ + preloader_console_init(); +} + +/* + * Manually probe the SPI bus devices, as this does not happen when the + * SPI Flash is probed, which then fails to find the bus. + */ +void spl_board_init(void) +{ + struct udevice *udev; + int ret = uclass_get_device_by_name(UCLASS_SPI, "spi@2008000", &udev); + + if (ret) { + printf("SPI bus probe failed, err = %d\n", ret); + }; +} +#endif |